Add <a is="action-link">, a web component extension of <a> for in-page actions.

chrome/browser/resources/options/language_options.css

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file. */
 
 #languagePage .content-area {
   width: 660px;
 }
 
 .language-options {
   display: -webkit-box;
@@ skipping 172 matching lines @@
 }
 
 #add-language-overlay-page .content-area {
   padding-bottom: 10px;
 }
 
 /* TODO(hshi): Remove this temporary hack once the bug is fixed in Chrome. */
 #add-language-overlay-language-list {
   width: -webkit-calc(100% - 4px);
 }
-
-.standalone-link-button {
-  padding: 0;
-}